Thomas g



UNITED STATES PATENT OFFICE.

THOMAS (l. BlJNNE'llll, OF NEW HAVEN, ()ONNEOllOUT, ASSlGNOlt TO THE\Vl'NCl'lEiTEl't ItEPEATlTNG ARMS COMPANY, OF SAME lEIllAClG.

PRIMER.

SPECIFICATION forming part of Letters Patent No. 294,957, dated March11, 1884.

Application filed December 31, 1881!.

T aZZ whom it may concern.-

Be it known that I, THOMAS G. BENNETT, of New Haven, in the county ofNew Haven and State of Connecticut, have invented a new Improvement inPrimers; and I do hereby declare the following, when taken in connectionwith accompanying drawings and the letters of reference marked thereon,to be a full, clear, and exact description of the same, and which [0said drawings constitute part of this specifica tion, and represent, in

Figure 1, a vertical section through the complete primer; Fig. 2, a faceview, and Fig. 3 an edge view of the auxiliary cup; Fig. 4, a

vertical section, illustrating the method of introducing the auxiliarycup to the principal cup; Fig. 5, a face view of the auxiliary cuphaving its flange uncut; Fig. 6, a face and Fig. 7 a side view of theanvil, all the figures 2o enlarged above full size.

This invention relates to an improvement in primers, with specialreference to locating and holding the fulminate in its proper centralposition inthe primer-cup by the employment of 2 5 an auxiliary cupintroduced within the prin cipal cup whereby the fulminate is first in-,troduced into the auxiliary cup, and then that auxiliary cnpwith thefulminate placed in the principal cup, and whereby not only is the 0fulminate centrally located, but the loss arising from accidentalexplosion of the fulminate in the process of manufacture-is to a greatextent avoided.- The loss referred'to, it will be understood, arisesfrom the defacing of the 3 5 cup in which the accidentalexplosion-occurs, and from which'explosion adjacent cups will bemore orless defaced',.and if the introduction is being made into the principalcups,

, then those principal cups are lost because of 40 the defect in theirappearance; but if the fol minate be introduced into an auxiliary cupwhich-is to be inclosed in the principal cup, such defacing does notinjure or aifect the principal cup, and the defacing of the auxiliarycup is no defect in the primer.

. The object of the invention is to secure the auxiliary cup within theprincipal cup; and it consists in a cup of considerably smaller diameterthan the interior of the principal cup,

plied thereto.

(No model.)

made from elastic sheet metal, with a concen- 5o trio flange around itsouter edge of slightly larger diameter than the internal diameter of theprincipal cup, and with one or more aper tures through the auxiliarycup, said auxiliary cup containing the fulminate, and introduced intothe principal cup open side down, and, forced into the cup, will causethe flange to turn upward or outward to contract its diamcter tocorrespond to the internal diameter of the principal cup, and by suchturning or contraction will engage the sides of the principal cup andserve to lock the auxiliary cup in its central position upon the bottomof the principal cup, as more fully hereinafter described.

The principal cup at is of the usual construction. The priming orauxiliary cup I) is made from elastic sheet metal, preferably-somewhatthinner than that of the principal cup, and in diameter and depthcorresponding to the pellet of fulminate required to belocated in theprimer. Around the mouth of this cup is an annular flange, c, a littlelarger in diameter than the internal diameter of the principal cup. Attwo opposite points, d d, a segment of this flange is cut out, as seenin Fig. 2, and at those points a notch, e, is made in'the side of thecup. The fulminate is introduced into this flanged cup in the usualmanner of placingthe fulminate in primers. The auxiliary cups, properlycharged, are placed over the principal cups, as seen in Fig.4, the mouthof the cup inward; then the auxiliary cup is forced into the principalcup, causing the flange c to turn outward orcontract against the innerwalls of the principal cup, and, thus contracted, the auxiliary cup isforced to the bottom of the principal cup, as seen in Fig. 1. Thecontracted flange engages the walls of the principal cup, and so as tostand in an inclined position toward the bottom of the principal cup,and act as a brace to hold the auxiliary cup in its position against thebottom of the principal cup, as seen in Fig. 1, and so that theauxiliary cup cannot be started from its position without considerableforce being ap- The apertures 6 permit the escape of the flame when theprimer is struck.

While I prefer to cut notches d (Z in the flange to make its contractioneasy, the flange may be left complete, as seen in Fig. 5.

In those primers in which an anvil is required the anvil f isconstructed in the usual form, as seen in Figs. (3 and 7, and introducedwithin the principal cup to bring its center to bear upon the centralauxiliary cup. By this construction not only is the fulminate central-1y located, but the cup containing it is locked in place independent ofthe anvil.

I claim- 1. The herein-described primer. consisting in the combinationof the principal cup at, the auxiliary cup I), of less diameter than theprincipal cup, containing the fulniinate, and con structed with aflange, 0, around its edge, of

larger diameter than the internal diameter of the principal cup, andwith one or more notches or openings, 6, from the cup, the saidauxiliary cup containing the fulminate introduced into the principal cupwith its open mouth toward the bottom of the principal cup, and wherebysaid flange acts as a brace against the principal cup with its openmouth toward the bottom of the principal cup, and whereby said flangeacts as a brace against the inner side of the principal cup, to hold theauxiliary cup in its central position upon the bottom of the principalcup, substantially as described.

THOMAS G. BENNETT;

Witnesses:

DANIEL H. VEAD R, LEE H. DANIELS.

